The word 'set' has the most definitions in the English language — over 430 in some dictionaries.

Code-switching — alternating between two languages mid-sentence — is a sophisticated skill, not a deficiency.

The Pirahã language of the Amazon has no words for numbers beyond 'one,' 'two,' and 'many.'

Noam Chomsky proposed humans have an innate 'universal grammar' — a built-in capacity for language.

Language is transmitted culturally, not genetically — children adopted across language communities learn the local language perfectly.

The word 'OK' may be the most recognized word in the world — understood in virtually every language.

English borrowed about 30% of its vocabulary from French, primarily after the Norman Conquest of 1066.

The most spoken language is Mandarin Chinese — with over 1.1 billion native speakers.

Orcas have unique dialects.